package com.langfeiyes.pattern.strategy.demo;

/**
 * 支付策略
 */
public interface IPayStrategy {
    //常量标记
    int  PAY_WECHAT = 1;
    int  PAY_ALI = 2;
    int  PAY_UNION = 3;
    /**
     * 支付
     */
    void pay(int money);
}
